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ATM Support on Circuit Emulation PICs Overview

M7i, M10i routers with 4-port COC3/CSTM1 Circuit Emulation PIC and 12-port T1/E1 Circuit Emulation PIC support ATM over MPLS (RFC 4717) and packet encapsulations (RFC 2684). Circuit Emulation PIC ATM configuration and behavior is consistent with existing ATM2 PICs.

The following protocols are supported:

  • ATM over MPLS (RFC 4717)
  • ATM via dynamic labels (LDP, RSVP-TE)

ATM OAM support:

  • Generation and monitoring of F4 and F5 OAM cells
  • Generation and monitoring of end-to-end cells of type AIS and RDI
  • Monitor and terminate loopback cells
  • Supports OAM on each VP and VC simultaneously

The following protocols are not supported:

  • QoS or CoS queues. All VCs are unspecified bit rate (UBR).
  • NxDS0 grooming.

The following ATM2 encapsulations are not supported:

  • atm-cisco-nlpid—Cisco-compatible ATM NLPID encapsulation
  • atm-mlppp-llc—ATM MLPPP over AAL5/LLC
  • atm-nlpid—ATM NLPID encapsulation
  • atm-ppp-llc—ATM PPP over AAL5/LLC
  • atm-ppp-vc-mux—ATM PPP over raw AAL5
  • atm-snap—ATM LLC/SNAP encapsulation
  • atm-tcc-snap—ATM LLC/SNAP for translational cross-connect
  • atm-tcc-vc-mux—ATM VC for translational cross-connect
  • vlan-vci-ccc—CCC for VLAN Q-in-Q and ATM VPI/VCI interworking
  • atm-vc-mux—ATM VC multiplexing
  • ether-over-atm-llc—Ethernet over ATM (LLC/SNAP) encapsulation
  • ether-vpls-over-atm-llc—Ethernet VPLS over ATM (bridging) encapsulation

Note: Circuit Emulation PICs require firmware version rom-ce-9.3.pbin or rom-ce-10.0.pbin for ATM IMA functionality on M7i, M10i, M40e, M120, and M320 routers running JUNOS OS Release 10.0R1 or later.

 

Related Documentation

 

Published: 2012-12-07

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